Apparatus for producing mold charges of molten glass



v r1"(531426 f A March 15 1927. \w J. MILLER 9 APPARATUS Fon PnoDucING MoLb CHARGES oF woman' GLASS original Filed sept. 23. 1919, z sheaw-shee'c 1 In v en tor w. J. MILLER APPARATUS FOR PRODUCING MOLD CHARGES 0F MOLTEN` GLASS March -15 1927. '1,621,426

original Filed sept. 25.1 .191s 2 sheets-Shana In v en tor r I/KQLZZ@ Atorn gy.

Patented Mar. 15, 1927.

UNITED STATES "PATENT oFFlcE.

WILLIAM J'. MILLER, SWISSVALE, PENNSYLVANIA, ASSIGNOR TO HARTFORD-EM- PIRE COMPANY, OF HARTFORD,l CONNECTICUT, A CORPORATION 0F DELAWARE.

APPARATUS 'FOR PRODUCING MOLD CHARGES 0F MOLTEN GLASS.`

Original application iiled September 23,

outlet port of the receptacle for the control of the discharge of glass from such port.

More particularly my present invention relates to the plunger mounting and the adjustment and regulation of p unger movement toward and away from the outlet, and

I provide new and improved means for that purpose. l

In the accompanying drawings, wherein I have illustrated the best embodiment of the principles of my invention now known to me, Fig. 1 is a vertical section of an apparatus for Vproducing a succession of mold charges of molten glass, the view being taken along the line I-I in Fig. 2, and Fig. 2 1s a plan view ofthe saine.

Referring to the drawings, B is a receptacle for the molten glass, usually a shallow extension or boot receiving its supply, of glass from the main melting tank or other source of supply, not shown. The boot is shown supported by the metal casing or boX C.

8 is an opening in the roof of the boot and provided with an annular plug or bushing 9 having a circumferential top ange 1() by means of which the plug is supported inthe opening.

11 is an opening in the bottom of the boot which is vertically alined with the roof opening 8.` The opening 11 is provided with a clay bushing 12 whose bore is downwardly tapering and forms the discharge port of 'the boot. In the drawings I have shown the discharge port in thev floor or bottom of the boot, and am thus enabled to takeadvantage of the gravity flow of the molten glass in discharging the latter from the boot, but it will be understood that the discharge port may be, horizontally positioned in the wall of theboot, if so desired, in which case the plunger would be positioned in alinement with the discharge port.

D is the plunger working in the glass in 1919, Serial No. 325,616. Divided and this application led April 1, 1926. Serial N0. 98,983'.

th boot in alinement with the openings 8 and 11. The plunger is shown comprised of a depending stem upon which the refractory clayl blocks 23 and 24 are mounted.

The stem 20 protrudes upwardly through the bore of the plug 9 and is provided with a threaded upper end portion 25 which extends through a circular opening in a crosshead 27 whose'ends are pivotally journaled in the parallelwalking bars 28. 29 represents adjusting nuts screwed on the threaded portion of the stem 20fabove and below the cross-head 27, whereby the position of the plunger may be adjusted relative to the walking bars by raislng or lowering it in the cross-head 27.

The walking bars 28 are connected to gether to move in unison and are fulcrumed at their one end by being pivotally mounted on the protruding ends of. a pivot pin '28L which is journaled intermediate of its endsl in a sleeve bearing 30`carried by the upper end of a post 31 which is attached to the stationary bracket 32 by means of screws ,33 inserted through holes in the post 31 and screwedinto threaded holes 34 in the bracket 32. A plurality of-such holes 34 at diifen,

of the plunger may be adjusted by means4 of a rod 35 pivotally depending from the free end of the walking bars and depending throughV an opening 36 in an abutment such as an extension of afixed portion of the structure. 37 represents upper and lower limiting nuts which are screwed-on the rod 35 above and below the abutment and which lthus determine the limits of movements of the plunger toward and away from the discharge port, respectively. By adjusting the proper limiting-nut on vthe rod, either lthe position of the plunger nearest to or most remote from the port may be independently adjusted, and such adjustment may be made while the feeder is in operation and without disturbing its driving connections.

,I provide Huid-pressure means for reciprocating the plunger, such means being preferably a double-acting cylinder and piston mechanism. v

Thus E is a vertically disposed Huid-pressure cylinder mounted on the boot structure and havin'g a double acting piston 38 whose yrod 39 protrudes through a gland in the upper end of the cylinder and is provided. with a head 40 having a horizontally slotted opening to receive a pin 41 spanningtlie space between the walking bars -28 and having its end inserted in the latter.

' 126 is a pipe connected to the upper end of the cylinder E and `127ris a Similar pipe connected to the lower end of the cylinder.

For the `downward movement of the piston the pipe 126 admits pressure and the pipev 127 relieves pressure, while for v'the upward movement of the piston the pipe -127 admits pressure and, the pipe 126 relieves pressure. 20

It is evident that when pressure is admitted to the lower end of the cylinder E and relieved from the upper end thereof, the plunger will be raised, and that the vplunger will be lowered when pressure is admitted to the upper end of the cylinder and relieved from its lower end, the pathor range Y of movement'of the plunger and its position nearest to and farthest from the discharge port being regulated by the adjustment of the limiting nuts 37 'on the rod 35.

The downward movement of the plunger' acts to accelerate the discharge of glass from the discharge port while its upward movement checks the outflow of the glass and tends to reverse the direction of its travel in the discharge port.

By means of the adjustments provided for regulating the plunger movements the quantity of glass discharged ma be varied and also the form or Shape whic. i isimparted to the extruded mass of glass before it is detached.

The use of fluid-pressure means for moving the plunger toward 'and away from the 1 plunger to be adjustably limited.

The present divisional application is filed for the 'purpose of claiming the means disclosed in the briginal application for adjustably mounting and reciprocating the plunger which 'controls the discharge of the glass, and for adjustably determining the stroke of that plunger.- Other novel features disclosed in the original application, Serial No.

325,616, some ofwhich are also disclosed in the present application, are not claimed'here- 11i but are claimed either in the original application or inother .divisions thereof.

lVhat I desire to claim is:

1. In apparatus for lfeeding moltenglass in a succession of mold charges, the combination with a receptacle for molten glass provided with a discharge outlet, of a vertically reciprocating implement working in the glass in said receptacle to control the discharge of glass through said outlet without seating at the outlet, means forimparting a reciprocating movement to said implement, means for limiting the reciprocatingfniovenient of said implement comprising an element moving in unison with said implement and adjacent to an abutment, and adjustable stop members at opposite sides of said abutment tolimit' the motion of said element relative to the abutment. f

2. lIn apparatus for feeding 'molten glass in a succession of mold charges, the combinationl with a receptacle for molten glass provided with a discharge outlet, of a vertically reciprocating implement working in the glass in said receptacle to control the discharge of glass through said outlet without seating at lthe outlet, means for'imparting a reciprocating movement to saidimplement, means for limiting the reciprocating movement of said implement comprising an element moving with -sai'd implement and adjacent to an abutment, and stop members disposed at opposite sides of said abutment to limit the movement of the element, the relation between said stop members and said abutment being adjustable whereby the path of movement of said implement may be varied. l

3. In apparatus for feeding molten glass in a succession of mold charges, the combination with a receptacle formolten glass provided with a discharge outlet, of al vertically reciprocating implement 4working in the glass in said receptacle to control the discharge of glass through said outlet without seating at the outlet, means for im ariing a reciprocating movement to said imp ement, and means for limiting the reciprocating movement of said implement and comprising an element moving with said implement and adjacent to an abutment, and stop members disposed at opposite sidesv of said abutment 'to limit the movement of said element relative to the abutment, the relation of yone of ysaid stop members to said abutment being adjustable whereby the limit of movement of said implement toward the outlet Amay be varied without changingits limit of movement away froml the outlet. l y

4; In apparatus for feedingmolten glass in a succession of mold charges, the combination with a receptacle for" molten glass provided with a discharge outlet, of a veriis tically reciprocating implement working in tlie glass"in said receptacle to control the discharge of glass through said outlet 4without seating at the outlet., means for imparting a reciprocating movement to said implement, and means for limiting the reciprocating movement of said implement and comprising an element moving with said implement and 4:uljacent to an abutment, and stop members disposed at opposite sides of said abutment to limit the movement of the element relative. to the abutment, the relation of one of said stop members to the abutment being adjustable whereby the limit ot' the movement of said implement away from the outlet may be varied without changing the limit of its movement toward the outlet.

5. In apparatus for feeding molten glass in a succession of mold charges, the combination with a receptacle for molten glass provided with a discharge outlet,l of a vertically reciprocating implement working in the glass in said receptacle to control the discliarge'of glass through said outlet Without seating at the outlet, means forv imparting a reciprocating movement to said implement, and means for vlimitingthe reciprocating movement of said implement and comprising an elementmoving with said implement and adjacent to an abutment, and stop members disposed at opposite sides of said abutment to limit the movement of the element relative to the abutment, the relation vbetween the abutment and each of said stop members being individually adjustable withoutchanging the relation between the abutment and the other stop member whereby the limit of the movement of said implement in either direction may be varied without changing the limit of its movement in the opposite direction.

6. In apparatus for feeding molten glass in a succession of mold charges, the combination with a receptacle for molten glass provided with'a discharge outlet, of a vertically reciprocating implement working in the glass in said4 receptacle to control the discharge of glass through said outlet without seating at theoutlet, ,fluid-pressure means for imparting a-reciprocating. movement to said implement, and means for limiting the reciproeating movement of said implement and comprising an element moving with said im-A plement and adjacent to an abutment, and stop members disposed on opposite sides of said abutment and arranged to limit 'the movement of the implement relative to the abutment, the relation between the stop mem-v bers and the abutment being adjustable whereby tlie-path of movement of the implement may be varied.

7. In apparatus for feeding molten glass tion with a receptacle for molten glass nrovided with a discharge outlet. of a vertically 'stop members disposed one above and one below said abutment and arranged to limit the movement of the element relative. to the abutment, the relation between the upper stop member and the abutmentbeing adjustable whereby the limit of movement of said implement toward the outlet maybe varied without changing its limit away from the outlet.

of movement f 8. In apparatus for feeding molten glass 'i in a successionof mold charges, tliecombination with a receptacle for molten glass provided with a discharge'outlet, of a vertically reciprocating implement working in the glass in said receptacle to control the `discharge of glass through said outlet without seating at the outlet, fluid-pressure means for imparting a reciprocating movement to said implement, and means for limiting the reciprocating movement of said implement and comprising an element moving with said-.implement and adjacent to an abutment, and stop members disposed one above and one vbelow said abut-ment and arranged to limit the movement ofthe element relative to the abutment,v the relation between the lower stopl member and the abutment Vbeing ads j ustable whereby the limit of movement of said implement away from the outlet may be varied without .changing the limit of its movement toward .the outlet.

l9. 1n apparatus for feeding molten glass in a succession of mold charges, the combination with a receptacle-for molten glass provided with a discharge outlet, of a vertically reciprocatingimplement workin in the glass in said receptacle to contro the discharge of glass through said'outlet without seating at the outlet, fluid-pressure means for imparting a reciprocating movement to said implement, and means for limiting the re'- lciprocating movement of said .implement and comprising an element moving with said implement and adjacent to an abutment, and

vstop ymembers disposed on opposite sides ofl said abutment and arranged to limit the movement of the element, the relation be# tween each of said stop members and the abutment being individually adjustable whereby the limit of movement of said lniplement inv one direction may be varied without changing its limitof movement in the i other direction. in a succession of mold charges', the combma- 10. In apparatiiis'for feeding molten -glass 1na succession ot mold charges, the combination with a receptacle for molten glass provided with a submerged discharge outlet, a vertically reciprocating implement working in the glass to control the dischargeof glass through said outlet 4and means for moving said implement toward and away from the outlet` of. means for limiting the reciprocating movement of said implement comprising a rod moving with said implement and in relation to an abutment, and stop members ou said rod above and below said abutment and arranged to be brought alternately into engagement-with said abutment-'to limit the movement of the implement toward and away from said outlet.

11.k In apparatus for feeding molten glass in asuccession of mold charges, the combination with a receptacle for molten glass provided with a submerged discharge outlet, a 'vertically reciprocating implement working in the glass'to control the discharge of glass through said outlet and means for moving said implement toward and away from the outlet, of means for limiting the reciprocating movement of said implement comprising a rod moving with said implement and in relation to an abutment, and stop members on said rod above and below said abutment and arranged to be brought alternately into engagement with said abutment to limit the movement of the implement toward and away trom-said outlet, said reciprocating movement of said implementk comprising a rod moving with ysaid implement and in relation to an abutment, and stop members on said rod above and below said abutment and arranged to be brought alternately into engagement with said abutment to limit the movement of .the implement toward and away from said outlet, said stop members being yindividually adjustable on said rod so as to provide means for indcpeudently varying the Ypositions of said in'lplement nearest to and remote from the outlet. r Y

18. In apparatus for 'feeding molten glass in a succession of mold charges, the combination with a receptacle for molten glass pro-` vided with a submerged discharge outlet, a

yvertically reciprocating implement working in the glass to control the discharge of glass through Saidoutlet and means forlno'ving said implement toward and away from the outlet, of means for limiting the reciprocating movement of said implement comprisin a screw rod moving with said implement an in relation to an abutment, and limiting nuts on said screw rod above and below said abutment and arranged to be brought into engagement with said abutment to limit the positionsof the implement nearest to and remote from the outlet. 'y 14. In apparatusk for feeding molten la in a succession of mold charges, the com ination with a rece tacle for molten glass provided with a submerged discharge outlet, a vertically reciprocating im lement working in the lass to control the ischarge of glass through said outlet, and means vfor moving the implement toward and away from the outlet, of `means for limiting the movement of said implement comprising a rod moving with said im lement and in relation to an abutment,an a stop member carried by said rod and Iadjustable along the length of said rod and arranged to belorought by the movement of `the implement into engagement wit-h the abutment to limit the movement of the implement,

15. Inapparatus for feeding molten glass in asuccession of mold charges, the combination with a receptacle for molten glass provided with a submerged discharge outlet, a vertically reciprocating implement working in the glass to control the discharge of glass through said outlet, and means for moving the implement toward and away from the outlet, et means for limiting the movement of said implement, comprising a screw-rod moving with said implement and in relation to an abutment, and a limiting nut on said rod arranged to be brought into ,engagement with the abutment by the movement of the implement.

16. In apparatus for feeding molten glass in a succession of mold charges or gathers, the combination of a receptacle for the glass provided with a submerged discharge outlet,

a rigid implement working in the glass in said receptacle to control the discharge of glass through said outlet, and means for reciprocating said implement comprising a rocking member arranged for pivotal movement on a horizontal axis, powerv connections for rocking said member, means for suspending said implement from said rocking member between said horizontal axis and said power connections, and means for vertically adjusting the'position of said implement with respect to said rocking member.

let, a rigid implement working in the glass' in said receptacle to control the discharge 17.' In apparatus for 'feeding molten glass` of glass through said outlet, means for-Ireciprocating said implement comprising -a rocking member arranged for pivotal movement on a horizontalv axis, power connec-A tions for rocking. said member, and means for suspending said implement from -said rocking member between 'said horizontal axis and the said power connections, and means for adjustably limiting the rocking movement of said member, comprising a member movable with said rocking'member and'extending adjacent to a ixe'd abutment, and stop members adjustably mounted on said men'iber and disposed on opposite sides of said abutment.

18. In apparatus for feeding moltenI glass in a succession of mold charges or gathers, the combination of a receptacle for the glass provided with asubmerged discharge outlet, a rigid implement working in the glass in said receptacle to control'the discharge of glass`through said outlet, means for reciprocating said implement comprising a rockingfmember arranged for pivotal movement on a horizontal axis, power connections for rocking said member, means for suspending said implement from said rock-l ing member between said horizontal axis` and the said power connections, and means for a'djustably limiting the rocking movex ment of said member, comprising a member, depending from/said rocking member and hai-'ing a screw-threaded portion' extending adjacent to a fixed abutment, and nuts-carried by the screw-threaded portion of said member and disposed above and below said abutment.

19. In apparatus for feeding molten glass in a succession of mold charges or gathers, the combination of a receptacle for the glass provided with a submerged discharge outet, a rigid implement working in the glass in said receptacle to control the discharge of glass through said outlet, means for reciprocating said implement comprising a,

rocking member arranged for pivotal movement on a horizontal axis, power connections for rocking said member, means for suspending said implement from said rocking member between said horizontal axis and the said power connections, means-for vertically adjusting th'e position of said horizontal axis, means for vertically adjusting theposition of said implement with respect to said rocking member, and means for adjustably limiting the rocking move-.

ment ot' said rocking member comprising a member depending from said rocking member and having a screw-threaded portion extending adjacent to a fixed abutment, and nuts carried by the screw-threaded portion ot' said member .and disposed above and-below said abutment.

20. In apparatus for feeding molten glass in a succession of mold charges o r gathers, the combination of a receptacle for the glass 'provided with` a submerged discharge outle,t,la rigid implement working in the glass in'said receptacle to control ythe discharge of the glass through said outlet, and means for y. 21.y In apparatus for -feedingmolte'n glass in a succession of mold charges or gathers, the combination of a receptacle forthe glass provided with a submerged discharge outlet, a rigid implement Working in the glass in said receptacle to control the discharge of the glass through said outlet,l and means for j operating the implement, said means comprising a movable member, a sleeve pivotally connected to saidmember, the upper end of the implement being inserted in said sleeve and a justable relative thereto, and means for imparting movement to said member to move the implement toward and away from 22. In apparatus for feeding molten glass in a succession of mold charges or gathers,

the combination of a receptacle for 'the glass provided with a submerged discharge outlet, i

a rigid implement working'in'the glass in said receptacle to control the discharge o the glass through said outlet, and means for operating the implement,said means comprising a 'movable member, a'sleeve pivotally connected to said member, theupper end of the implement being inserted in said sleeve, nuts screwed on the implement and bearing on either endl of the sleeve, and

means for imparting movement to said member to move the implement toward and away from the outlet.l j

23. In apparatus for producing a succession of mold charges of molten glass, the combination with a receptacle for the molten glass having a submerged discharge outlet,

of a rigid implement working in the glass to control the discharge of glass from said outlet, driving means including an oscillating lever for moving the implement toward and away fromtheoutlet, and` means for supporting and adjustably positioning the ful- Crum of said lever, including a stationary F bracket, a vertically adjustable post carryino said fulcrum, and means for securing sald post to said bracket at various lelevations. v

124. Mechanism for supporting and yreciprocating a glass feeding plunger comprising lunger, and means for rocking said memers comprlsm a fluid-pressure cylinder, a piston and a piston rod, the said piston rod eing connected to communicate rocking` i nection near the other end thereof,a sleeve s acin said members apart at the fulcrum t ereo a cross-head extending between said members and located between the ends there-v of and arranged to suspend said plunger,l and y power cormections for rocking said members comprising a fluld-pressure cyhnder, a piston and a piston rod, thesaid piston rod being connectedl to the portions of said rock-l ing members that are relatively close to each other. I

26. Mechanism yfor supporting and reciprocatingna glass, feedingplunger comprising -two laterally spaced rocking members both mounted -for pivotal. movement on a common axis at one end thereof and approaching each other to accommodate a power connection near the other end thereof, a sleeve spacing 'said members apart at the fulcrum thereo a cross-head extending be- 'tween said members and located between the ends thereof-and arranged to suspend said pluncer, power connections for rocking said mem ers comprising a fluid-pressure cylinder, a iston and apiston rod, the said pistonro being connected to the portions of said rocking'members that are relatively close-to each other, and the said rocking members being extended beyond the connec-4 tion with said pistonrod and carrying a depending member, and meanscarried by said depending memberlfor limiting the rocking movement of said rocking members.

Signed at Pittsburgh, Pa., this 29th day of March, 1926.

j WILLIAM J. MILLER. 

